Electric-lamp switch.



J. A. M. TRAUS.

ELEGTRIG LAMP SWITCH.

APPLIGATION P11-.1111 1111.24, 1911,

1,075,953. Patented 901.114.1913.

@ZM/Mm" (Qlomeg.

JOHANNES A. M. TRLTS, OF ROTTERDAM, NETHERLANDS.

ELECTRILMP SWITCH.

To nl] wilomv't muy concern.

Be it 'known that l, Joni-minas AnnmNUs M iinxis Tnixts, a subject of the Queen ot'A the Netherlands;residing at" i0 Boerenyischmarkt, Rotterdam, Kingdom ot the Nether-A lands, have invented certain new and useful. lmprm-ements in and Relating to Electric- Lamp Switches, of which the following is a specification.

This invention relates to electric lamp switches of the type in which the power cir- 'cuit is closed and broken in the switch by means, of contacts7 extending int-o a rocking sealed glass tube or container,'which are connected or disconnected 'bly means of mercury, the switch itself being operated by. small currents in a circuit independent of the nia-in or working circuit and closed and broken in known manner by a key suited to small currents.

'At'cording to the present intention the ar rangement is such that successive momentary excitations of an 5 electromagnet provide'd with an armature result in alternate rockings of the container, so that current either flows continuously or ceases 4to tion' in the Work circuit7 Whereas in' the low tension circuit cuirent only flows during the actual operation of completing or breaking the u'c-rk circuit.. i I i The manner ,of adjustment of themercury Contact' tube by Vcams or cam disks permits the switch to be easily constructed as a series switch7 several inerculifT Contacts being arranged in proxiniity, all of which can be so controlled by electromagnets that the desired changes of vconnection are effected.

'ln the accompanying drawing one form et construction offthe new switch isillustrated by way of example.

Figure l is ai Er'ont elevation, and Fig. 2 a rear elevation of theswitc'h partly in section. Eig. 3 is ,aplan. lFig. et a diagrammatic View vof a complete installation, While Figs, 5 to S arc diagrannnatic views eta series switch. a

The switch isinounted upon a base plate 1 of insulatino' material. Upon this platev is secured an eactromagnet, the core 2 of which Ais fastened to the -plate While the coil 3 rests' upon it. At its upper endl the core carries two metal pieces a betweenL which is -reyolu` ,bly arranged an armature 5. Connected to this armature 5 is a pin Gon the endof which is pivoted a two-armed pawl 7.

Near the coll ftFig. 3) aspindlefS is se:

Specification of Letters Patent.

Patent-ed oef. 14,. 191m` Application tiled January 24, 1911. y Serial No. .604,380., i

cured in `lbearings upon the plate 1. This carries on one side a toothed wheel 9 With' tour teeth "or pins which are shifted 'by the two-armed paWl 7. A small locking paivl l() prevents baclmi'ard movement of t-he toothed wheel 9, Upon the other end of the spindle 8 is secured an elliptical disk Il., i

.Behind the coil 3 (Fig. 3) there is mount# .ed in bearings a small spindle 12 upon which a plate 18 is rotatably fastened.n This carries 1n a sheathili ofunsulating material asealed evacuated glass' tube'l'v containing` some mercury. Two platinum' Wires extend l into-'the interior of the glass tube't'rom one side, these being seal "l f outside the tubethey i ble conductors to the t; T Wo other terminals lS'and 'lil on the'switch serve for the introduction offeurrent to the innecgtedby ileximals 1,6 and, 17.`

magnetcoil.. 4The plate .i8 '1'ests-1ipoii'-tlie Q elliptical' disltll..

As may be seen from Fig.' l, the switch 20 is advantageously1 arranged'in'the corner ofv the floor above the room, and the battery 21 forming vthe source of the small current may also be near'the switch sothat both these devices are always readily accessible.. The' power conductors are led inthe usual manner through the ceiling to the lamp 22 While the conductors for the small currentpass from the switch Q0 to the battery 21 and't'o the switch The neu' switch operates v.as follows: Thel electrodes of ltheiveak current battery 21am connect'eduit-h the terminals i8 and 19 of the switch with the switch 23 in circuit and.

the power' supply ,wires are joined to the terminals 16 and i7. It now the electromagnet l 4 4is vmornentarily excited ,through the small current Vcircuit being closed by operation of switch 23, the armature -Will be ,attracted and Willrotate about. its axis untilitsend rests .upon the magnet core. By thismeans v 't-he-pin Gand pawl 7 -Will. be raised so that the pawl is moved toward the right (Figi-2).. The upper arinof the nawl Which'isresti-ng withv the nextv two following teeth' of the Wheel.. The Wheelwill therefore beheld in' pawl 10 mayl against a tooth will turn the toothedwheel-v l `9Wh'ile the vlower arm-.comes into contact ros.

ViThile the -toothedl'wheel has turned through the space ot one tooth, the elliptical disk 11 will have` turned 90 from the posit-ionshown in Fig. V1. .'The plate 13 `:W'iththe .falls hack into the position shown in Fig. l,

the pin G and pawl 7 moving` reelv back so that the upper arm of the pawl 7 engages behind the next tooth, while the .glass tube remains in its new position. It the electromagnet yis momentarily excited a second time the diskl 1l will be turned 90O farther and the glass tube inclined to the other side so that the mercury Willliow back to the lett (Fig. l); contact between the platinum Wires will be interrupted and the lamp will be extinguished.

If the new stitch is to be used for a series connection of lamps` or for a series of lamps, twov or more disks 11 will be arranged one beside another upon the spindle 8. .These are then, however, formed as quadrants 24 -andQ and are relatively staggered upon the spindle 8 (Fig. 5)., Upon each of these disks rests a mercurycontact tube 15.` The quadrants 24 and 25 may be so arranged that in a certain position both lamps or groups of lamps are cut out (Fig. 5). 'if the spindle is thereupon turned 900 one group ot lamps aloneis lighted F 6) upon a further turn through 90O this group of lam-ps remains alight and the other group of lamps is connected in (Fig. 7). Upon still further revolution the first group of lamps is switched out Whilethe other remains in circuit (Fig.

8), while finally onfurther revolution the second group is also extinguished (Fig. 5).

What I claim is: 1. An electric switch comprising a" cam shaft, cam-like means thereon, a toothed wheel on said shaft having teeth 90o apart,

\ an electromagnet, an armature for the same,

a two-armed pawl secured to the armature, and coperating with three teeth of the wheel, and a liquid contact maker arranged to be operated by the cam.

2. An electric switch comprising a cam shaft, la cam thereon having maximum and minimum radii 90o apart, a toothed Wheel on said shaft. having teeth 90o apart, an elec troi'nagnet, an armature i'or the same, a two-armed pawl secured to the armature, and coperating with three teeth of the wvheel, and a liquid conta-ct maker arranged to be operated by the cam.

3. An electric switch ycomprising a. cam shaft, a cam'thereon having maximum and minimum radii 90O apart, a toothed 'wheel on said shaft having teeth 90 apart, an electromagnet, a low voltage, electric supply for same, a pivoted armaturet'or said magnet, a two-armed paWly secured to the armature and coperating with three teeth of the wheel and a liquid contact maker arranged to be operated by the cam.

lu testimony whereof l have hereunto set my hand in presence ot two subscribing wit nesses.

JOHANNES A.. M. TR1/KUS. Witnesses JOHANNES BnusuANs, MARTIN BAKER. 

